JPS5674324A - Molding method of pipe material and its device - Google Patents
Molding method of pipe material and its deviceInfo
- Publication number
- JPS5674324A JPS5674324A JP15052579A JP15052579A JPS5674324A JP S5674324 A JPS5674324 A JP S5674324A JP 15052579 A JP15052579 A JP 15052579A JP 15052579 A JP15052579 A JP 15052579A JP S5674324 A JPS5674324 A JP S5674324A
- Authority
- JP
- Japan
- Prior art keywords
- pipe material
- concave
- shape
- concave groove
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
Abstract
PURPOSE: To press a pipe material while heating the same by supplying the power to electrodes and form a sharp concave groove having no burn flaws on the outside surface of the pipe by grasping the wall of the pipe material between the concave- inner electrode and the outer electrode of a convex shape conforming to the concave shape.
CONSTITUTION: An inner electrode 3 having a single concave part 12 corresponded to the concave groove shape to be formed on a pipe material 2 at the inserting part 11 of a semicircular section conformed to the inside shape of the pipe material 7 is inserted onto the pipe material 7. Next, an outer electrode 2 provided with a convex part 9 conformed to the concave groove shape to be formed is opposedly disposed. Thence, when the power is supplied to the electrode 2 while it is being pressed under predetermined pressure, the pipe material 7 deforms between the convex part 9 and the concave part 12, whereby the concave groove conforming to the concave part is formed. Equally good results are also obtained even by providing plural concave parts 16A, 16B on the circumferential surface of the insertion part 15 of a circular section smaller than the inside diameter of the pipe material 7 and successively rotatively using the pressure receiving surface of the inner electrode 3B having a cooling water passage 17 in the inside.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15052579A JPS5674324A (en) | 1979-11-20 | 1979-11-20 | Molding method of pipe material and its device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15052579A JPS5674324A (en) | 1979-11-20 | 1979-11-20 | Molding method of pipe material and its device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5674324A true JPS5674324A (en) | 1981-06-19 |
JPS638875B2 JPS638875B2 (en) | 1988-02-24 |
Family
ID=15498763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15052579A Granted JPS5674324A (en) | 1979-11-20 | 1979-11-20 | Molding method of pipe material and its device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5674324A (en) |
-
1979
- 1979-11-20 JP JP15052579A patent/JPS5674324A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS638875B2 (en) | 1988-02-24 |
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